laravel 数据库查询优化

    $cid = '分类ID';
    $cat = Cache::remember('cat-' . $cid, Carbon::now()->addMinutes(60), function ()  ($cid) {
          return Category::where([['parent_id', $cid], ['is_show', 1]])
          ->select('cat_id', 'cat_name', 'parent_id', 'style')
          ->orderBy('sort_order')
          ->get();
        });


    $allCat = Cache::remember('allCat', Carbon::now()->addHour(3), function () {
            return Category::where('is_show', 1)
            ->select('cat_id', 'cat_name', 'parent_id')
            ->orderBy('sort_order')
            ->get()
            ->toArray();
        });